A class to do scheduled repaints at certain user specified moments in
the execution of the model. This component piggy-backs with the execution
of its container, and allows you to define that repaints need to happen when
certain functions of its container are executed. Currently only repaints at
wrapup or post-fire can be scheduled.

setContainer

Specify the container NamedObj, adding this attribute to the
list of attributes in the container. If the container already
contains an attribute with the same name, then throw an exception
and do not make any changes. Similarly, if the container is
not in the same workspace as this attribute, throw an exception.
If this attribute is already contained by the NamedObj, do nothing.
If the attribute already has a container, remove
this attribute from its attribute list first. Otherwise, remove
it from the directory of the workspace, if it is there.
If the argument is null, then remove it from its container.
It is not added to the workspace directory, so this could result in
this object being garbage collected.
Note that since an Attribute is a NamedObj, it can itself have
attributes. However, recursive containment is not allowed, where
an attribute is an attribute of itself, or indirectly of any attribute
it contains. This method is write-synchronized on the
workspace and increments its version number.

IllegalActionException - If this attribute is not of the
expected class for the container, or it has no name,
or the attribute and container are not in the same workspace, or
the proposed container would result in recursive containment.